Pickering's Triangle in the Veil Nebula supernova remnant

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"Pickering's Triangle" is a small section of the greater Veil Nebula supernova remnant in the constellation Cygnus the Swan. This image was shot through narrowband filters; red represents emissions from excited hydrogen gas, while blue represents emissions from doubly-ionized oxygen. The entire Veil Nebula can be seen here:

Veil Nebula Complex


Optics:8-inch RC telescope
Camera:QHY268M cooled CMOS camera
Exposure info:7.3 hrs each Halpha and OIII (10 min subs)
Filters used:Astronomik H-alpha, OIII filters
date:October/November 2021
processing:Pixinsight-->Photoshop-->Topaz DeNoise AI-->Lightroom


Below is an interesting variation of the image, using software to remove most of the stars, the faint nebulosity becomes more apparent.